<%@ page language="java" contentType="text/html; charset=UTF-8"
    pageEncoding="UTF-8"%>
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>Insert title here</title>
</head>
<body>
<%
	// 1
	pageContext.setAttribute("name", "赵六 pageContext");
	// 2 request
	// 3 session
	// 4 application 
	
	
	// 当多个域对象中有相同名字的信息，则显示较小范围的内容
	// pageContext< request<session<application
%>
name:${name}<br/>

pageContext: ${pageScope.name}<br />
request: ${requestScope.name}<br />
session: ${sessionScope.name}<br />
application: ${applicationScope.name}<br />
</body>
</html>